When im driving,especially at low speeds I noticed that when I let off the gas all the way, It dosent idle down all the way. Its almost like cruise control is on. At low speeds is when its the worst. Lets say im in a parking lot, and I let off the gas. The rpms stay at what I was cruising at until I get on the brakes. Its not out of control or anything its just kinda anoying,and I feel like my brakes are taking a litle more punishment than normal. Any Ideas?